1 /* V850-specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
22 dependencies. As is the gas & simulator code for the v850. */
30 #include "libiberty.h"
32 /* Sign-extend a 24-bit number. */
33 #define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000)
35 static reloc_howto_type *v850_elf_reloc_type_lookup
36 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
37 static void v850_elf_info_to_howto_rel
38 PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
39 static void v850_elf_info_to_howto_rela
40 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
41 static bfd_reloc_status_type v850_elf_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43 static boolean v850_elf_is_local_label_name
44 PARAMS ((bfd *, const char *));
45 static boolean v850_elf_relocate_section
46 PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
47 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
48 static bfd_reloc_status_type v850_elf_perform_relocation
49 PARAMS ((bfd *, unsigned int, bfd_vma, bfd_byte *));
50 static boolean v850_elf_check_relocs
51 PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
52 static void remember_hi16s_reloc
53 PARAMS ((bfd *, bfd_vma, bfd_byte *));
54 static bfd_byte * find_remembered_hi16s_reloc
55 PARAMS ((bfd_vma, boolean *));
56 static bfd_reloc_status_type v850_elf_final_link_relocate
57 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, bfd_vma,
58 bfd_vma, bfd_vma, struct bfd_link_info *, asection *, int));
59 static boolean v850_elf_object_p
61 static boolean v850_elf_fake_sections
62 PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
63 static void v850_elf_final_write_processing
64 PARAMS ((bfd *, boolean));
65 static boolean v850_elf_set_private_flags
66 PARAMS ((bfd *, flagword));
67 static boolean v850_elf_merge_private_bfd_data
68 PARAMS ((bfd *, bfd *));
69 static boolean v850_elf_print_private_bfd_data
70 PARAMS ((bfd *, PTR));
71 static boolean v850_elf_section_from_bfd_section
72 PARAMS ((bfd *, asection *, int *));
73 static void v850_elf_symbol_processing
74 PARAMS ((bfd *, asymbol *));
75 static boolean v850_elf_add_symbol_hook
76 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
77 const char **, flagword *, asection **, bfd_vma *));
78 static boolean v850_elf_link_output_symbol_hook
79 PARAMS ((bfd *, struct bfd_link_info *, const char *,
80 Elf_Internal_Sym *, asection *));
81 static boolean v850_elf_section_from_shdr
82 PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
83 static boolean v850_elf_gc_sweep_hook
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
86 static asection * v850_elf_gc_mark_hook
87 PARAMS ((asection *, struct bfd_link_info *,
88 Elf_Internal_Rela *, struct elf_link_hash_entry *,
90 static bfd_reloc_status_type v850_elf_ignore_reloc
91 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
92 static boolean v850_elf_relax_delete_bytes
93 PARAMS ((bfd *, asection *, bfd_vma, bfd_vma, int));
94 static boolean v850_elf_relax_section
95 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
97 /* Note: It is REQUIRED that the 'type' value of each entry
98 in this array match the index of the entry in the array. */
99 static reloc_howto_type v850_elf_howto_table[] =
101 /* This reloc does nothing. */
102 HOWTO (R_V850_NONE, /* type */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
106 false, /* pc_relative */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_V850_NONE", /* name */
111 false, /* partial_inplace */
114 false), /* pcrel_offset */
116 /* A PC relative 9 bit branch. */
117 HOWTO (R_V850_9_PCREL, /* type */
119 2, /* size (0 = byte, 1 = short, 2 = long) */
121 true, /* pc_relative */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 v850_elf_reloc, /* special_function */
125 "R_V850_9_PCREL", /* name */
126 false, /* partial_inplace */
127 0x00ffffff, /* src_mask */
128 0x00ffffff, /* dst_mask */
129 true), /* pcrel_offset */
131 /* A PC relative 22 bit branch. */
132 HOWTO (R_V850_22_PCREL, /* type */
134 2, /* size (0 = byte, 1 = short, 2 = long) */
136 true, /* pc_relative */
138 complain_overflow_signed, /* complain_on_overflow */
139 v850_elf_reloc, /* special_function */
140 "R_V850_22_PCREL", /* name */
141 false, /* partial_inplace */
142 0x07ffff80, /* src_mask */
143 0x07ffff80, /* dst_mask */
144 true), /* pcrel_offset */
146 /* High 16 bits of symbol value. */
147 HOWTO (R_V850_HI16_S, /* type */
149 1, /* size (0 = byte, 1 = short, 2 = long) */
151 false, /* pc_relative */
153 complain_overflow_dont, /* complain_on_overflow */
154 v850_elf_reloc, /* special_function */
155 "R_V850_HI16_S", /* name */
156 false, /* partial_inplace */
157 0xffff, /* src_mask */
158 0xffff, /* dst_mask */
159 false), /* pcrel_offset */
161 /* High 16 bits of symbol value. */
162 HOWTO (R_V850_HI16, /* type */
164 1, /* size (0 = byte, 1 = short, 2 = long) */
166 false, /* pc_relative */
168 complain_overflow_dont, /* complain_on_overflow */
169 v850_elf_reloc, /* special_function */
170 "R_V850_HI16", /* name */
171 false, /* partial_inplace */
172 0xffff, /* src_mask */
173 0xffff, /* dst_mask */
174 false), /* pcrel_offset */
176 /* Low 16 bits of symbol value. */
177 HOWTO (R_V850_LO16, /* type */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
181 false, /* pc_relative */
183 complain_overflow_dont, /* complain_on_overflow */
184 v850_elf_reloc, /* special_function */
185 "R_V850_LO16", /* name */
186 false, /* partial_inplace */
187 0xffff, /* src_mask */
188 0xffff, /* dst_mask */
189 false), /* pcrel_offset */
191 /* Simple 32bit reloc. */
192 HOWTO (R_V850_32, /* type */
194 2, /* size (0 = byte, 1 = short, 2 = long) */
196 false, /* pc_relative */
198 complain_overflow_dont, /* complain_on_overflow */
199 v850_elf_reloc, /* special_function */
200 "R_V850_32", /* name */
201 false, /* partial_inplace */
202 0xffffffff, /* src_mask */
203 0xffffffff, /* dst_mask */
204 false), /* pcrel_offset */
206 /* Simple 16bit reloc. */
207 HOWTO (R_V850_16, /* type */
209 1, /* size (0 = byte, 1 = short, 2 = long) */
211 false, /* pc_relative */
213 complain_overflow_dont, /* complain_on_overflow */
214 bfd_elf_generic_reloc, /* special_function */
215 "R_V850_16", /* name */
216 false, /* partial_inplace */
217 0xffff, /* src_mask */
218 0xffff, /* dst_mask */
219 false), /* pcrel_offset */
221 /* Simple 8bit reloc. */
222 HOWTO (R_V850_8, /* type */
224 0, /* size (0 = byte, 1 = short, 2 = long) */
226 false, /* pc_relative */
228 complain_overflow_dont, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_V850_8", /* name */
231 false, /* partial_inplace */
234 false), /* pcrel_offset */
236 /* 16 bit offset from the short data area pointer. */
237 HOWTO (R_V850_SDA_16_16_OFFSET, /* type */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
241 false, /* pc_relative */
243 complain_overflow_dont, /* complain_on_overflow */
244 v850_elf_reloc, /* special_function */
245 "R_V850_SDA_16_16_OFFSET", /* name */
246 false, /* partial_inplace */
247 0xffff, /* src_mask */
248 0xffff, /* dst_mask */
249 false), /* pcrel_offset */
251 /* 15 bit offset from the short data area pointer. */
252 HOWTO (R_V850_SDA_15_16_OFFSET, /* type */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
256 false, /* pc_relative */
258 complain_overflow_dont, /* complain_on_overflow */
259 v850_elf_reloc, /* special_function */
260 "R_V850_SDA_15_16_OFFSET", /* name */
261 false, /* partial_inplace */
262 0xfffe, /* src_mask */
263 0xfffe, /* dst_mask */
264 false), /* pcrel_offset */
266 /* 16 bit offset from the zero data area pointer. */
267 HOWTO (R_V850_ZDA_16_16_OFFSET, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 false, /* pc_relative */
273 complain_overflow_dont, /* complain_on_overflow */
274 v850_elf_reloc, /* special_function */
275 "R_V850_ZDA_16_16_OFFSET", /* name */
276 false, /* partial_inplace */
277 0xffff, /* src_mask */
278 0xffff, /* dst_mask */
279 false), /* pcrel_offset */
281 /* 15 bit offset from the zero data area pointer. */
282 HOWTO (R_V850_ZDA_15_16_OFFSET, /* type */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
286 false, /* pc_relative */
288 complain_overflow_dont, /* complain_on_overflow */
289 v850_elf_reloc, /* special_function */
290 "R_V850_ZDA_15_16_OFFSET", /* name */
291 false, /* partial_inplace */
292 0xfffe, /* src_mask */
293 0xfffe, /* dst_mask */
294 false), /* pcrel_offset */
296 /* 6 bit offset from the tiny data area pointer. */
297 HOWTO (R_V850_TDA_6_8_OFFSET, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 false, /* pc_relative */
303 complain_overflow_dont, /* complain_on_overflow */
304 v850_elf_reloc, /* special_function */
305 "R_V850_TDA_6_8_OFFSET", /* name */
306 false, /* partial_inplace */
309 false), /* pcrel_offset */
311 /* 8 bit offset from the tiny data area pointer. */
312 HOWTO (R_V850_TDA_7_8_OFFSET, /* type */
314 1, /* size (0 = byte, 1 = short, 2 = long) */
316 false, /* pc_relative */
318 complain_overflow_dont, /* complain_on_overflow */
319 v850_elf_reloc, /* special_function */
320 "R_V850_TDA_7_8_OFFSET", /* name */
321 false, /* partial_inplace */
324 false), /* pcrel_offset */
326 /* 7 bit offset from the tiny data area pointer. */
327 HOWTO (R_V850_TDA_7_7_OFFSET, /* type */
329 1, /* size (0 = byte, 1 = short, 2 = long) */
331 false, /* pc_relative */
333 complain_overflow_dont, /* complain_on_overflow */
334 v850_elf_reloc, /* special_function */
335 "R_V850_TDA_7_7_OFFSET", /* name */
336 false, /* partial_inplace */
339 false), /* pcrel_offset */
341 /* 16 bit offset from the tiny data area pointer! */
342 HOWTO (R_V850_TDA_16_16_OFFSET, /* type */
344 1, /* size (0 = byte, 1 = short, 2 = long) */
346 false, /* pc_relative */
348 complain_overflow_dont, /* complain_on_overflow */
349 v850_elf_reloc, /* special_function */
350 "R_V850_TDA_16_16_OFFSET", /* name */
351 false, /* partial_inplace */
352 0xffff, /* src_mask */
353 0xfff, /* dst_mask */
354 false), /* pcrel_offset */
356 /* 5 bit offset from the tiny data area pointer. */
357 HOWTO (R_V850_TDA_4_5_OFFSET, /* type */
359 1, /* size (0 = byte, 1 = short, 2 = long) */
361 false, /* pc_relative */
363 complain_overflow_dont, /* complain_on_overflow */
364 v850_elf_reloc, /* special_function */
365 "R_V850_TDA_4_5_OFFSET", /* name */
366 false, /* partial_inplace */
369 false), /* pcrel_offset */
371 /* 4 bit offset from the tiny data area pointer. */
372 HOWTO (R_V850_TDA_4_4_OFFSET, /* type */
374 1, /* size (0 = byte, 1 = short, 2 = long) */
376 false, /* pc_relative */
378 complain_overflow_dont, /* complain_on_overflow */
379 v850_elf_reloc, /* special_function */
380 "R_V850_TDA_4_4_OFFSET", /* name */
381 false, /* partial_inplace */
384 false), /* pcrel_offset */
386 /* 16 bit offset from the short data area pointer. */
387 HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 false, /* pc_relative */
393 complain_overflow_dont, /* complain_on_overflow */
394 v850_elf_reloc, /* special_function */
395 "R_V850_SDA_16_16_SPLIT_OFFSET",/* name */
396 false, /* partial_inplace */
397 0xfffe0020, /* src_mask */
398 0xfffe0020, /* dst_mask */
399 false), /* pcrel_offset */
401 /* 16 bit offset from the zero data area pointer. */
402 HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 false, /* pc_relative */
408 complain_overflow_dont, /* complain_on_overflow */
409 v850_elf_reloc, /* special_function */
410 "R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */
411 false, /* partial_inplace */
412 0xfffe0020, /* src_mask */
413 0xfffe0020, /* dst_mask */
414 false), /* pcrel_offset */
416 /* 6 bit offset from the call table base pointer. */
417 HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 false, /* pc_relative */
423 complain_overflow_dont, /* complain_on_overflow */
424 v850_elf_reloc, /* special_function */
425 "R_V850_CALLT_6_7_OFFSET", /* name */
426 false, /* partial_inplace */
429 false), /* pcrel_offset */
431 /* 16 bit offset from the call table base pointer. */
432 HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */
434 1, /* size (0 = byte, 1 = short, 2 = long) */
436 false, /* pc_relative */
438 complain_overflow_dont, /* complain_on_overflow */
439 v850_elf_reloc, /* special_function */
440 "R_V850_CALLT_16_16_OFFSET", /* name */
441 false, /* partial_inplace */
442 0xffff, /* src_mask */
443 0xffff, /* dst_mask */
444 false), /* pcrel_offset */
446 /* GNU extension to record C++ vtable hierarchy */
447 HOWTO (R_V850_GNU_VTINHERIT, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 false, /* pc_relative */
453 complain_overflow_dont, /* complain_on_overflow */
454 NULL, /* special_function */
455 "R_V850_GNU_VTINHERIT", /* name */
456 false, /* partial_inplace */
459 false), /* pcrel_offset */
461 /* GNU extension to record C++ vtable member usage */
462 HOWTO (R_V850_GNU_VTENTRY, /* type */
464 2, /* size (0 = byte, 1 = short, 2 = long) */
466 false, /* pc_relative */
468 complain_overflow_dont, /* complain_on_overflow */
469 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
470 "R_V850_GNU_VTENTRY", /* name */
471 false, /* partial_inplace */
474 false), /* pcrel_offset */
476 /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall
477 pseudo-op when it finds a function call which can be relaxed. */
478 HOWTO (R_V850_LONGCALL, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 true, /* pc_relative */
484 complain_overflow_signed, /* complain_on_overflow */
485 v850_elf_ignore_reloc, /* special_function */
486 "R_V850_LONGCALL", /* name */
487 false, /* partial_inplace */
490 true), /* pcrel_offset */
492 /* Indicates a .longjump pseudo-op. The compiler will generate a
493 .longjump pseudo-op when it finds a branch which can be relaxed. */
494 HOWTO (R_V850_LONGJUMP, /* type */
496 2, /* size (0 = byte, 1 = short, 2 = long) */
498 true, /* pc_relative */
500 complain_overflow_signed, /* complain_on_overflow */
501 v850_elf_ignore_reloc, /* special_function */
502 "R_V850_LONGJUMP", /* name */
503 false, /* partial_inplace */
506 true), /* pcrel_offset */
508 HOWTO (R_V850_ALIGN, /* type */
510 1, /* size (0 = byte, 1 = short, 2 = long) */
512 false, /* pc_relative */
514 complain_overflow_unsigned, /* complain_on_overflow */
515 v850_elf_ignore_reloc, /* special_function */
516 "R_V850_ALIGN", /* name */
517 false, /* partial_inplace */
520 true), /* pcrel_offset */
523 /* Map BFD reloc types to V850 ELF reloc types. */
525 struct v850_elf_reloc_map
527 /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an
529 bfd_reloc_code_real_type bfd_reloc_val;
530 unsigned int elf_reloc_val;
533 static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
535 { BFD_RELOC_NONE, R_V850_NONE },
536 { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL },
537 { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL },
538 { BFD_RELOC_HI16_S, R_V850_HI16_S },
539 { BFD_RELOC_HI16, R_V850_HI16 },
540 { BFD_RELOC_LO16, R_V850_LO16 },
541 { BFD_RELOC_32, R_V850_32 },
542 { BFD_RELOC_16, R_V850_16 },
543 { BFD_RELOC_8, R_V850_8 },
544 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET },
545 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
546 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
547 { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
548 { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
549 { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
550 { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
551 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
552 { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
553 { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
554 { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
555 { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
556 { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
557 { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
558 { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT },
559 { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY },
560 { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL },
561 { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP },
562 { BFD_RELOC_V850_ALIGN, R_V850_ALIGN },
566 /* Map a bfd relocation into the appropriate howto structure. */
568 static reloc_howto_type *
569 v850_elf_reloc_type_lookup (abfd, code)
570 bfd * abfd ATTRIBUTE_UNUSED;
571 bfd_reloc_code_real_type code;
575 for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;)
576 if (v850_elf_reloc_map[i].bfd_reloc_val == code)
578 unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val;
580 BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val);
582 return v850_elf_howto_table + elf_reloc_val;
588 /* Set the howto pointer for an V850 ELF reloc. */
591 v850_elf_info_to_howto_rel (abfd, cache_ptr, dst)
592 bfd * abfd ATTRIBUTE_UNUSED;
594 Elf32_Internal_Rel * dst;
598 r_type = ELF32_R_TYPE (dst->r_info);
599 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
600 cache_ptr->howto = &v850_elf_howto_table[r_type];
603 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
605 v850_elf_info_to_howto_rela (abfd, cache_ptr, dst)
606 bfd * abfd ATTRIBUTE_UNUSED;
608 Elf32_Internal_Rela *dst;
612 r_type = ELF32_R_TYPE (dst->r_info);
613 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
614 cache_ptr->howto = &v850_elf_howto_table[r_type];
617 /* Look through the relocs for a section during the first phase, and
618 allocate space in the global offset table or procedure linkage
622 v850_elf_check_relocs (abfd, info, sec, relocs)
624 struct bfd_link_info * info;
626 const Elf_Internal_Rela * relocs;
630 Elf_Internal_Shdr *symtab_hdr;
631 struct elf_link_hash_entry **sym_hashes;
632 const Elf_Internal_Rela *rel;
633 const Elf_Internal_Rela *rel_end;
635 enum v850_reloc_type r_type;
637 const char *common = (const char *)0;
639 if (info->relocateable)
643 fprintf (stderr, "v850_elf_check_relocs called for section %s in %s\n",
644 bfd_get_section_name (abfd, sec),
645 bfd_archive_filename (abfd));
648 dynobj = elf_hash_table (info)->dynobj;
649 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
650 sym_hashes = elf_sym_hashes (abfd);
653 rel_end = relocs + sec->reloc_count;
654 for (rel = relocs; rel < rel_end; rel++)
656 unsigned long r_symndx;
657 struct elf_link_hash_entry *h;
659 r_symndx = ELF32_R_SYM (rel->r_info);
660 if (r_symndx < symtab_hdr->sh_info)
663 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
665 r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info);
671 case R_V850_22_PCREL:
678 case R_V850_CALLT_6_7_OFFSET:
679 case R_V850_CALLT_16_16_OFFSET:
682 /* This relocation describes the C++ object vtable hierarchy.
683 Reconstruct it for later use during GC. */
684 case R_V850_GNU_VTINHERIT:
685 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
689 /* This relocation describes which C++ vtable entries
690 are actually used. Record for later use during GC. */
691 case R_V850_GNU_VTENTRY:
692 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
696 case R_V850_SDA_16_16_SPLIT_OFFSET:
697 case R_V850_SDA_16_16_OFFSET:
698 case R_V850_SDA_15_16_OFFSET:
699 other = V850_OTHER_SDA;
701 goto small_data_common;
703 case R_V850_ZDA_16_16_SPLIT_OFFSET:
704 case R_V850_ZDA_16_16_OFFSET:
705 case R_V850_ZDA_15_16_OFFSET:
706 other = V850_OTHER_ZDA;
708 goto small_data_common;
710 case R_V850_TDA_4_5_OFFSET:
711 case R_V850_TDA_4_4_OFFSET:
712 case R_V850_TDA_6_8_OFFSET:
713 case R_V850_TDA_7_8_OFFSET:
714 case R_V850_TDA_7_7_OFFSET:
715 case R_V850_TDA_16_16_OFFSET:
716 other = V850_OTHER_TDA;
720 #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
725 /* Flag which type of relocation was used. */
727 if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
728 && (h->other & V850_OTHER_ERROR) == 0)
731 static char buff[200]; /* XXX */
733 switch (h->other & V850_OTHER_MASK)
736 msg = _("Variable `%s' cannot occupy in multiple small data regions");
738 case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
739 msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
741 case V850_OTHER_SDA | V850_OTHER_ZDA:
742 msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously");
744 case V850_OTHER_SDA | V850_OTHER_TDA:
745 msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
747 case V850_OTHER_ZDA | V850_OTHER_TDA:
748 msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
752 sprintf (buff, msg, h->root.root.string);
753 info->callbacks->warning (info, buff, h->root.root.string,
754 abfd, h->root.u.def.section,
757 bfd_set_error (bfd_error_bad_value);
758 h->other |= V850_OTHER_ERROR;
763 if (h && h->root.type == bfd_link_hash_common
765 && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
769 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
770 section->flags |= SEC_IS_COMMON;
774 fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
775 v850_elf_howto_table[ (int)r_type ].name,
776 (h && h->root.root.string) ? h->root.root.string : "<unknown>",
777 (h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
786 /* In the old version, when an entry was checked out from the table,
787 it was deleted. This produced an error if the entry was needed
788 more than once, as the second attempted retry failed.
790 In the current version, the entry is not deleted, instead we set
791 the field 'found' to true. If a second lookup matches the same
792 entry, then we know that the hi16s reloc has already been updated
793 and does not need to be updated a second time.
795 TODO - TOFIX: If it is possible that we need to restore 2 different
796 addresses from the same table entry, where the first generates an
797 overflow, whilst the second do not, then this code will fail. */
799 typedef struct hi16s_location
803 unsigned long counter;
805 struct hi16s_location * next;
809 static hi16s_location * previous_hi16s;
810 static hi16s_location * free_hi16s;
811 static unsigned long hi16s_counter;
814 remember_hi16s_reloc (abfd, addend, address)
819 hi16s_location * entry = NULL;
820 bfd_size_type amt = sizeof (* free_hi16s);
822 /* Find a free structure. */
823 if (free_hi16s == NULL)
824 free_hi16s = (hi16s_location *) bfd_zalloc (abfd, amt);
827 free_hi16s = free_hi16s->next;
829 entry->addend = addend;
830 entry->address = address;
831 entry->counter = hi16s_counter ++;
832 entry->found = false;
833 entry->next = previous_hi16s;
834 previous_hi16s = entry;
836 /* Cope with wrap around of our counter. */
837 if (hi16s_counter == 0)
839 /* XXX - Assume that all counter entries differ only in their low 16 bits. */
840 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
841 entry->counter &= 0xffff;
843 hi16s_counter = 0x10000;
850 find_remembered_hi16s_reloc (addend, already_found)
852 boolean * already_found;
854 hi16s_location * match = NULL;
855 hi16s_location * entry;
856 hi16s_location * previous = NULL;
857 hi16s_location * prev;
860 /* Search the table. Record the most recent entry that matches. */
861 for (entry = previous_hi16s; entry; entry = entry->next)
863 if (entry->addend == addend
864 && (match == NULL || match->counter < entry->counter))
876 /* Extract the address. */
877 addr = match->address;
879 /* Remeber if this entry has already been used before. */
881 * already_found = match->found;
883 /* Note that this entry has now been used. */
889 /* FIXME: The code here probably ought to be removed and the code in reloc.c
890 allowed to do its stuff instead. At least for most of the relocs, anwyay. */
892 static bfd_reloc_status_type
893 v850_elf_perform_relocation (abfd, r_type, addend, address)
900 bfd_signed_vma saddend = (bfd_signed_vma) addend;
905 /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */
906 return bfd_reloc_notsupported;
909 bfd_put_32 (abfd, addend, address);
912 case R_V850_22_PCREL:
913 if (saddend > 0x1fffff || saddend < -0x200000)
914 return bfd_reloc_overflow;
916 if ((addend % 2) != 0)
917 return bfd_reloc_dangerous;
919 insn = bfd_get_32 (abfd, address);
921 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
922 bfd_put_32 (abfd, (bfd_vma) insn, address);
926 if (saddend > 0xff || saddend < -0x100)
927 return bfd_reloc_overflow;
929 if ((addend % 2) != 0)
930 return bfd_reloc_dangerous;
932 insn = bfd_get_16 (abfd, address);
934 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
938 addend += (bfd_get_16 (abfd, address) << 16);
939 addend = (addend >> 16);
944 /* Remember where this relocation took place. */
945 remember_hi16s_reloc (abfd, addend, address);
947 addend += (bfd_get_16 (abfd, address) << 16);
948 addend = (addend >> 16) + ((addend & 0x8000) != 0);
950 /* This relocation cannot overflow. */
958 /* Calculate the sum of the value stored in the instruction and the
959 addend and check for overflow from the low 16 bits into the high
960 16 bits. The assembler has already done some of this: If the
961 value stored in the instruction has its 15th bit set, (counting
962 from zero) then the assembler will have added 1 to the value
963 stored in the associated HI16S reloc. So for example, these
966 movhi hi( fred ), r0, r1
967 movea lo( fred ), r1, r1
969 will store 0 in the value fields for the MOVHI and MOVEA instructions
970 and addend will be the address of fred, but for these instructions:
972 movhi hi( fred + 0x123456), r0, r1
973 movea lo( fred + 0x123456), r1, r1
975 the value stored in the MOVHI instruction will be 0x12 and the value
976 stored in the MOVEA instruction will be 0x3456. If however the
979 movhi hi( fred + 0x10ffff), r0, r1
980 movea lo( fred + 0x10ffff), r1, r1
982 then the value stored in the MOVHI instruction would be 0x11 (not
983 0x10) and the value stored in the MOVEA instruction would be 0xffff.
984 Thus (assuming for the moment that the addend is 0), at run time the
985 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
986 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
987 the instructions were:
989 movhi hi( fred - 1), r0, r1
990 movea lo( fred - 1), r1, r1
992 then 0 is stored in the MOVHI instruction and -1 is stored in the
995 Overflow can occur if the addition of the value stored in the
996 instruction plus the addend sets the 15th bit when before it was clear.
997 This is because the 15th bit will be sign extended into the high part,
998 thus reducing its value by one, but since the 15th bit was originally
999 clear, the assembler will not have added 1 to the previous HI16S reloc
1000 to compensate for this effect. For example:
1002 movhi hi( fred + 0x123456), r0, r1
1003 movea lo( fred + 0x123456), r1, r1
1005 The value stored in HI16S reloc is 0x12, the value stored in the LO16
1006 reloc is 0x3456. If we assume that the address of fred is 0x00007000
1007 then the relocations become:
1009 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
1010 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
1012 but when the instructions are executed, the MOVEA instruction's value
1013 is signed extended, so the sum becomes:
1018 0x0011a456 but 'fred + 0x123456' = 0x0012a456
1020 Note that if the 15th bit was set in the value stored in the LO16
1021 reloc, then we do not have to do anything:
1023 movhi hi( fred + 0x10ffff), r0, r1
1024 movea lo( fred + 0x10ffff), r1, r1
1026 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
1027 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
1032 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
1034 Overflow can also occur if the computation carries into the 16th bit
1035 and it also results in the 15th bit having the same value as the 15th
1036 bit of the original value. What happens is that the HI16S reloc
1037 will have already examined the 15th bit of the original value and
1038 added 1 to the high part if the bit is set. This compensates for the
1039 sign extension of 15th bit of the result of the computation. But now
1040 there is a carry into the 16th bit, and this has not been allowed for.
1042 So, for example if fred is at address 0xf000:
1044 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1045 movea lo( fred + 0xffff), r1, r1
1047 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
1048 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
1053 0x0000efff but 'fred + 0xffff' = 0x0001efff
1055 Similarly, if the 15th bit remains clear, but overflow occurs into
1056 the 16th bit then (assuming the address of fred is 0xf000):
1058 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1059 movea lo( fred + 0x7000), r1, r1
1061 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
1062 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1067 0x00006fff but 'fred + 0x7000' = 0x00016fff
1069 Note - there is no need to change anything if a carry occurs, and the
1070 15th bit changes its value from being set to being clear, as the HI16S
1071 reloc will have already added in 1 to the high part for us:
1073 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1074 movea lo( fred + 0xffff), r1, r1
1076 HI16S: 0x0001 + (0x00007000 >> 16)
1077 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1080 + 0x00006fff (bit 15 not set, so the top half is zero)
1082 0x00016fff which is right (assuming that fred is at 0x7000)
1084 but if the 15th bit goes from being clear to being set, then we must
1085 once again handle overflow:
1087 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1088 movea lo( fred + 0x7000), r1, r1
1090 HI16S: 0x0000 + (0x0000ffff >> 16)
1091 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
1094 + 0x00006fff (bit 15 not set, so the top half is zero)
1096 0x00006fff which is wrong (assuming that fred is at 0xffff). */
1100 insn = bfd_get_16 (abfd, address);
1101 result = insn + addend;
1103 #define BIT15_SET(x) ((x) & 0x8000)
1104 #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
1106 if ((BIT15_SET (result) && ! BIT15_SET (addend))
1107 || (OVERFLOWS (addend, insn)
1108 && ((! BIT15_SET (insn)) || (BIT15_SET (addend)))))
1110 boolean already_updated;
1111 bfd_byte * hi16s_address = find_remembered_hi16s_reloc
1112 (addend, & already_updated);
1114 /* Amend the matching HI16_S relocation. */
1115 if (hi16s_address != NULL)
1117 if (! already_updated)
1119 insn = bfd_get_16 (abfd, hi16s_address);
1121 bfd_put_16 (abfd, (bfd_vma) insn, hi16s_address);
1126 fprintf (stderr, _("FAILED to find previous HI16 reloc\n"));
1127 return bfd_reloc_overflow;
1131 /* Do not complain if value has top bit set, as this has been anticipated. */
1132 insn = result & 0xffff;
1137 addend += (char) bfd_get_8 (abfd, address);
1139 saddend = (bfd_signed_vma) addend;
1141 if (saddend > 0x7f || saddend < -0x80)
1142 return bfd_reloc_overflow;
1144 bfd_put_8 (abfd, addend, address);
1145 return bfd_reloc_ok;
1147 case R_V850_CALLT_16_16_OFFSET:
1148 addend += bfd_get_16 (abfd, address);
1150 saddend = (bfd_signed_vma) addend;
1152 if (saddend > 0xffff || saddend < 0)
1153 return bfd_reloc_overflow;
1161 case R_V850_SDA_16_16_OFFSET:
1162 case R_V850_ZDA_16_16_OFFSET:
1163 case R_V850_TDA_16_16_OFFSET:
1164 addend += bfd_get_16 (abfd, address);
1166 saddend = (bfd_signed_vma) addend;
1168 if (saddend > 0x7fff || saddend < -0x8000)
1169 return bfd_reloc_overflow;
1174 case R_V850_SDA_15_16_OFFSET:
1175 case R_V850_ZDA_15_16_OFFSET:
1176 insn = bfd_get_16 (abfd, address);
1177 addend += (insn & 0xfffe);
1179 saddend = (bfd_signed_vma) addend;
1181 if (saddend > 0x7ffe || saddend < -0x8000)
1182 return bfd_reloc_overflow;
1185 return bfd_reloc_dangerous;
1187 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
1190 case R_V850_TDA_6_8_OFFSET:
1191 insn = bfd_get_16 (abfd, address);
1192 addend += ((insn & 0x7e) << 1);
1194 saddend = (bfd_signed_vma) addend;
1196 if (saddend > 0xfc || saddend < 0)
1197 return bfd_reloc_overflow;
1200 return bfd_reloc_dangerous;
1203 insn |= (addend >> 1);
1206 case R_V850_TDA_7_8_OFFSET:
1207 insn = bfd_get_16 (abfd, address);
1208 addend += ((insn & 0x7f) << 1);
1210 saddend = (bfd_signed_vma) addend;
1212 if (saddend > 0xfe || saddend < 0)
1213 return bfd_reloc_overflow;
1216 return bfd_reloc_dangerous;
1219 insn |= (addend >> 1);
1222 case R_V850_TDA_7_7_OFFSET:
1223 insn = bfd_get_16 (abfd, address);
1224 addend += insn & 0x7f;
1226 saddend = (bfd_signed_vma) addend;
1228 if (saddend > 0x7f || saddend < 0)
1229 return bfd_reloc_overflow;
1235 case R_V850_TDA_4_5_OFFSET:
1236 insn = bfd_get_16 (abfd, address);
1237 addend += ((insn & 0xf) << 1);
1239 saddend = (bfd_signed_vma) addend;
1241 if (saddend > 0x1e || saddend < 0)
1242 return bfd_reloc_overflow;
1245 return bfd_reloc_dangerous;
1248 insn |= (addend >> 1);
1251 case R_V850_TDA_4_4_OFFSET:
1252 insn = bfd_get_16 (abfd, address);
1253 addend += insn & 0xf;
1255 saddend = (bfd_signed_vma) addend;
1257 if (saddend > 0xf || saddend < 0)
1258 return bfd_reloc_overflow;
1264 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1265 case R_V850_SDA_16_16_SPLIT_OFFSET:
1266 insn = bfd_get_32 (abfd, address);
1267 addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
1269 saddend = (bfd_signed_vma) addend;
1271 if (saddend > 0x7fff || saddend < -0x8000)
1272 return bfd_reloc_overflow;
1275 insn |= (addend & 1) << 5;
1276 insn |= (addend &~ (bfd_vma) 1) << 16;
1278 bfd_put_32 (abfd, (bfd_vma) insn, address);
1279 return bfd_reloc_ok;
1281 case R_V850_CALLT_6_7_OFFSET:
1282 insn = bfd_get_16 (abfd, address);
1283 addend += ((insn & 0x3f) << 1);
1285 saddend = (bfd_signed_vma) addend;
1287 if (saddend > 0x7e || saddend < 0)
1288 return bfd_reloc_overflow;
1291 return bfd_reloc_dangerous;
1294 insn |= (addend >> 1);
1297 case R_V850_GNU_VTINHERIT:
1298 case R_V850_GNU_VTENTRY:
1299 return bfd_reloc_ok;
1303 bfd_put_16 (abfd, (bfd_vma) insn, address);
1304 return bfd_reloc_ok;
1307 /* Insert the addend into the instruction. */
1309 static bfd_reloc_status_type
1310 v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err)
1311 bfd * abfd ATTRIBUTE_UNUSED;
1314 PTR data ATTRIBUTE_UNUSED;
1315 asection * isection;
1317 char ** err ATTRIBUTE_UNUSED;
1321 /* If there is an output BFD,
1322 and the symbol is not a section name (which is only defined at final link time),
1323 and either we are not putting the addend into the instruction
1324 or the addend is zero, so there is nothing to add into the instruction
1325 then just fixup the address and return. */
1326 if (obfd != (bfd *) NULL
1327 && (symbol->flags & BSF_SECTION_SYM) == 0
1328 && (! reloc->howto->partial_inplace
1329 || reloc->addend == 0))
1331 reloc->address += isection->output_offset;
1332 return bfd_reloc_ok;
1335 else if (obfd != NULL)
1336 return bfd_reloc_continue;
1339 /* Catch relocs involving undefined symbols. */
1340 if (bfd_is_und_section (symbol->section)
1341 && (symbol->flags & BSF_WEAK) == 0
1343 return bfd_reloc_undefined;
1345 /* We handle final linking of some relocs ourselves. */
1347 /* Is the address of the relocation really within the section? */
1348 if (reloc->address > isection->_cooked_size)
1349 return bfd_reloc_outofrange;
1351 /* Work out which section the relocation is targetted at and the
1352 initial relocation command value. */
1354 if (reloc->howto->pc_relative == true)
1355 return bfd_reloc_ok;
1357 /* Get symbol value. (Common symbols are special.) */
1358 if (bfd_is_com_section (symbol->section))
1361 relocation = symbol->value;
1363 /* Convert input-section-relative symbol value to absolute + addend. */
1364 relocation += symbol->section->output_section->vma;
1365 relocation += symbol->section->output_offset;
1366 relocation += reloc->addend;
1368 #if 0 /* Since this reloc is going to be processed later on, we should
1369 not make it pc-relative here. To test this, try assembling and
1370 linking this program:
1378 .section ".foo","ax"
1382 if (reloc->howto->pc_relative)
1384 /* Here the variable relocation holds the final address of the
1385 symbol we are relocating against, plus any addend. */
1386 relocation -= isection->output_section->vma + isection->output_offset;
1388 /* Deal with pcrel_offset. */
1389 relocation -= reloc->address;
1392 reloc->addend = relocation;
1393 return bfd_reloc_ok;
1396 /* This function is used for relocs which are only used
1397 for relaxing, which the linker should otherwise ignore. */
1399 static bfd_reloc_status_type
1400 v850_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
1401 output_bfd, error_message)
1402 bfd * abfd ATTRIBUTE_UNUSED;
1403 arelent * reloc_entry;
1404 asymbol * symbol ATTRIBUTE_UNUSED;
1405 PTR data ATTRIBUTE_UNUSED;
1406 asection * input_section;
1408 char ** error_message ATTRIBUTE_UNUSED;
1410 if (output_bfd != NULL)
1411 reloc_entry->address += input_section->output_offset;
1413 return bfd_reloc_ok;
1417 v850_elf_is_local_label_name (abfd, name)
1418 bfd * abfd ATTRIBUTE_UNUSED;
1421 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1422 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1425 /* Perform a relocation as part of a final link. */
1427 static bfd_reloc_status_type
1428 v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1429 input_section, contents, offset, value,
1430 addend, info, sym_sec, is_local)
1431 reloc_howto_type * howto;
1433 bfd * output_bfd ATTRIBUTE_UNUSED;
1434 asection * input_section;
1435 bfd_byte * contents;
1439 struct bfd_link_info * info;
1441 int is_local ATTRIBUTE_UNUSED;
1443 unsigned int r_type = howto->type;
1444 bfd_byte * hit_data = contents + offset;
1446 /* Adjust the value according to the relocation. */
1449 case R_V850_9_PCREL:
1450 value -= (input_section->output_section->vma
1451 + input_section->output_offset);
1455 case R_V850_22_PCREL:
1456 value -= (input_section->output_section->vma
1457 + input_section->output_offset
1460 /* If the sign extension will corrupt the value then we have overflowed. */
1461 if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000))
1462 return bfd_reloc_overflow;
1464 /* Only the bottom 24 bits of the PC are valid */
1465 value = SEXT24 (value);
1476 case R_V850_ZDA_15_16_OFFSET:
1477 case R_V850_ZDA_16_16_OFFSET:
1478 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1479 if (sym_sec == NULL)
1480 return bfd_reloc_undefined;
1482 value -= sym_sec->output_section->vma;
1485 case R_V850_SDA_15_16_OFFSET:
1486 case R_V850_SDA_16_16_OFFSET:
1487 case R_V850_SDA_16_16_SPLIT_OFFSET:
1490 struct bfd_link_hash_entry * h;
1492 if (sym_sec == NULL)
1493 return bfd_reloc_undefined;
1495 /* Get the value of __gp. */
1496 h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true);
1497 if (h == (struct bfd_link_hash_entry *) NULL
1498 || h->type != bfd_link_hash_defined)
1499 return bfd_reloc_other;
1501 gp = (h->u.def.value
1502 + h->u.def.section->output_section->vma
1503 + h->u.def.section->output_offset);
1505 value -= sym_sec->output_section->vma;
1506 value -= (gp - sym_sec->output_section->vma);
1510 case R_V850_TDA_4_4_OFFSET:
1511 case R_V850_TDA_4_5_OFFSET:
1512 case R_V850_TDA_16_16_OFFSET:
1513 case R_V850_TDA_7_7_OFFSET:
1514 case R_V850_TDA_7_8_OFFSET:
1515 case R_V850_TDA_6_8_OFFSET:
1518 struct bfd_link_hash_entry * h;
1520 /* Get the value of __ep. */
1521 h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true);
1522 if (h == (struct bfd_link_hash_entry *) NULL
1523 || h->type != bfd_link_hash_defined)
1524 /* Actually this indicates that __ep could not be found. */
1525 return bfd_reloc_continue;
1527 ep = (h->u.def.value
1528 + h->u.def.section->output_section->vma
1529 + h->u.def.section->output_offset);
1535 case R_V850_CALLT_6_7_OFFSET:
1538 struct bfd_link_hash_entry * h;
1540 /* Get the value of __ctbp. */
1541 h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true);
1542 if (h == (struct bfd_link_hash_entry *) NULL
1543 || h->type != bfd_link_hash_defined)
1544 /* Actually this indicates that __ctbp could not be found. */
1545 return bfd_reloc_dangerous + 1;
1547 ctbp = (h->u.def.value
1548 + h->u.def.section->output_section->vma
1549 + h->u.def.section->output_offset);
1554 case R_V850_CALLT_16_16_OFFSET:
1557 struct bfd_link_hash_entry * h;
1559 if (sym_sec == NULL)
1560 return bfd_reloc_undefined;
1562 /* Get the value of __ctbp. */
1563 h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true);
1564 if (h == (struct bfd_link_hash_entry *) NULL
1565 || h->type != bfd_link_hash_defined)
1566 return (bfd_reloc_dangerous + 1);
1568 ctbp = (h->u.def.value
1569 + h->u.def.section->output_section->vma
1570 + h->u.def.section->output_offset);
1572 value -= sym_sec->output_section->vma;
1573 value -= (ctbp - sym_sec->output_section->vma);
1578 case R_V850_GNU_VTINHERIT:
1579 case R_V850_GNU_VTENTRY:
1580 case R_V850_LONGCALL:
1581 case R_V850_LONGJUMP:
1583 return bfd_reloc_ok;
1586 return bfd_reloc_notsupported;
1589 /* Perform the relocation. */
1590 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
1593 /* Relocate an V850 ELF section. */
1596 v850_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1597 contents, relocs, local_syms, local_sections)
1599 struct bfd_link_info * info;
1601 asection * input_section;
1602 bfd_byte * contents;
1603 Elf_Internal_Rela * relocs;
1604 Elf_Internal_Sym * local_syms;
1605 asection ** local_sections;
1607 Elf_Internal_Shdr * symtab_hdr;
1608 struct elf_link_hash_entry ** sym_hashes;
1609 Elf_Internal_Rela * rel;
1610 Elf_Internal_Rela * relend;
1612 if (info->relocateable)
1615 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1616 sym_hashes = elf_sym_hashes (input_bfd);
1618 if (sym_hashes == NULL)
1620 info->callbacks->warning
1621 (info, "no hash table available",
1622 NULL, input_bfd, input_section, (bfd_vma) 0);
1627 /* Reset the list of remembered HI16S relocs to empty. */
1628 free_hi16s = previous_hi16s;
1629 previous_hi16s = NULL;
1633 relend = relocs + input_section->reloc_count;
1634 for (; rel < relend; rel++)
1637 reloc_howto_type * howto;
1638 unsigned long r_symndx;
1639 Elf_Internal_Sym * sym;
1641 struct elf_link_hash_entry * h;
1643 bfd_reloc_status_type r;
1645 r_symndx = ELF32_R_SYM (rel->r_info);
1646 r_type = ELF32_R_TYPE (rel->r_info);
1648 if (r_type == R_V850_GNU_VTENTRY
1649 || r_type == R_V850_GNU_VTINHERIT)
1652 /* This is a final link. */
1653 howto = v850_elf_howto_table + r_type;
1657 if (r_symndx < symtab_hdr->sh_info)
1659 sym = local_syms + r_symndx;
1660 sec = local_sections[r_symndx];
1661 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
1666 name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name);
1667 name = (name == NULL) ? "<none>" : name;
1668 fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
1669 sec->name, name, sym->st_name,
1670 sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend);
1676 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1678 while (h->root.type == bfd_link_hash_indirect
1679 || h->root.type == bfd_link_hash_warning)
1680 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1682 if (h->root.type == bfd_link_hash_defined
1683 || h->root.type == bfd_link_hash_defweak)
1685 sec = h->root.u.def.section;
1686 relocation = (h->root.u.def.value
1687 + sec->output_section->vma
1688 + sec->output_offset);
1690 fprintf (stderr, "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
1691 sec->name, h->root.root.string, h->root.u.def.value, sec->output_section->vma, sec->output_offset, relocation);
1694 else if (h->root.type == bfd_link_hash_undefweak)
1697 fprintf (stderr, "undefined: sec: %s, name: %s\n",
1698 sec->name, h->root.root.string);
1704 if (! ((*info->callbacks->undefined_symbol)
1705 (info, h->root.root.string, input_bfd,
1706 input_section, rel->r_offset, true)))
1709 fprintf (stderr, "unknown: name: %s\n", h->root.root.string);
1715 /* FIXME: We should use the addend, but the COFF relocations don't. */
1716 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1718 contents, rel->r_offset,
1719 relocation, rel->r_addend,
1720 info, sec, h == NULL);
1722 if (r != bfd_reloc_ok)
1725 const char * msg = (const char *)0;
1728 name = h->root.root.string;
1731 name = (bfd_elf_string_from_elf_section
1732 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1733 if (name == NULL || *name == '\0')
1734 name = bfd_section_name (input_bfd, sec);
1739 case bfd_reloc_overflow:
1740 if (! ((*info->callbacks->reloc_overflow)
1741 (info, name, howto->name, (bfd_vma) 0,
1742 input_bfd, input_section, rel->r_offset)))
1746 case bfd_reloc_undefined:
1747 if (! ((*info->callbacks->undefined_symbol)
1748 (info, name, input_bfd, input_section,
1749 rel->r_offset, true)))
1753 case bfd_reloc_outofrange:
1754 msg = _("internal error: out of range error");
1757 case bfd_reloc_notsupported:
1758 msg = _("internal error: unsupported relocation error");
1761 case bfd_reloc_dangerous:
1762 msg = _("internal error: dangerous relocation");
1765 case bfd_reloc_other:
1766 msg = _("could not locate special linker symbol __gp");
1769 case bfd_reloc_continue:
1770 msg = _("could not locate special linker symbol __ep");
1773 case (bfd_reloc_dangerous + 1):
1774 msg = _("could not locate special linker symbol __ctbp");
1778 msg = _("internal error: unknown error");
1782 if (!((*info->callbacks->warning)
1783 (info, msg, name, input_bfd, input_section,
1795 v850_elf_gc_sweep_hook (abfd, info, sec, relocs)
1796 bfd *abfd ATTRIBUTE_UNUSED;
1797 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1798 asection *sec ATTRIBUTE_UNUSED;
1799 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
1801 /* No got and plt entries for v850-elf. */
1806 v850_elf_gc_mark_hook (sec, info, rel, h, sym)
1808 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1809 Elf_Internal_Rela *rel;
1810 struct elf_link_hash_entry *h;
1811 Elf_Internal_Sym *sym;
1815 switch (ELF32_R_TYPE (rel->r_info))
1817 case R_V850_GNU_VTINHERIT:
1818 case R_V850_GNU_VTENTRY:
1822 switch (h->root.type)
1824 case bfd_link_hash_defined:
1825 case bfd_link_hash_defweak:
1826 return h->root.u.def.section;
1828 case bfd_link_hash_common:
1829 return h->root.u.c.p->section;
1837 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1842 /* Set the right machine number. */
1845 v850_elf_object_p (abfd)
1848 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1851 case E_V850_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, 0); break;
1852 case E_V850E_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); break;
1857 /* Store the machine number in the flags field. */
1860 v850_elf_final_write_processing (abfd, linker)
1862 boolean linker ATTRIBUTE_UNUSED;
1866 switch (bfd_get_mach (abfd))
1869 case 0: val = E_V850_ARCH; break;
1870 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1873 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1874 elf_elfheader (abfd)->e_flags |= val;
1877 /* Function to keep V850 specific file flags. */
1880 v850_elf_set_private_flags (abfd, flags)
1884 BFD_ASSERT (!elf_flags_init (abfd)
1885 || elf_elfheader (abfd)->e_flags == flags);
1887 elf_elfheader (abfd)->e_flags = flags;
1888 elf_flags_init (abfd) = true;
1892 /* Merge backend specific data from an object file
1893 to the output object file when linking. */
1895 v850_elf_merge_private_bfd_data (ibfd, obfd)
1902 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1903 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1906 in_flags = elf_elfheader (ibfd)->e_flags;
1907 out_flags = elf_elfheader (obfd)->e_flags;
1909 if (! elf_flags_init (obfd))
1911 /* If the input is the default architecture then do not
1912 bother setting the flags for the output architecture,
1913 instead allow future merges to do this. If no future
1914 merges ever set these flags then they will retain their
1915 unitialised values, which surprise surprise, correspond
1916 to the default values. */
1917 if (bfd_get_arch_info (ibfd)->the_default)
1920 elf_flags_init (obfd) = true;
1921 elf_elfheader (obfd)->e_flags = in_flags;
1923 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1924 && bfd_get_arch_info (obfd)->the_default)
1925 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
1930 /* Check flag compatibility. */
1931 if (in_flags == out_flags)
1934 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1935 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
1936 _bfd_error_handler (_("%s: Architecture mismatch with previous modules"),
1937 bfd_archive_filename (ibfd));
1942 /* Display the flags field. */
1945 v850_elf_print_private_bfd_data (abfd, ptr)
1949 FILE * file = (FILE *) ptr;
1951 BFD_ASSERT (abfd != NULL && ptr != NULL);
1953 _bfd_elf_print_private_bfd_data (abfd, ptr);
1955 /* xgettext:c-format */
1956 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
1958 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1961 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
1962 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
1970 /* V850 ELF uses four common sections. One is the usual one, and the
1971 others are for (small) objects in one of the special data areas:
1972 small, tiny and zero. All the objects are kept together, and then
1973 referenced via the gp register, the ep register or the r0 register
1974 respectively, which yields smaller, faster assembler code. This
1975 approach is copied from elf32-mips.c. */
1977 static asection v850_elf_scom_section;
1978 static asymbol v850_elf_scom_symbol;
1979 static asymbol * v850_elf_scom_symbol_ptr;
1980 static asection v850_elf_tcom_section;
1981 static asymbol v850_elf_tcom_symbol;
1982 static asymbol * v850_elf_tcom_symbol_ptr;
1983 static asection v850_elf_zcom_section;
1984 static asymbol v850_elf_zcom_symbol;
1985 static asymbol * v850_elf_zcom_symbol_ptr;
1987 /* Given a BFD section, try to locate the
1988 corresponding ELF section index. */
1991 v850_elf_section_from_bfd_section (abfd, sec, retval)
1992 bfd * abfd ATTRIBUTE_UNUSED;
1996 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1997 *retval = SHN_V850_SCOMMON;
1998 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
1999 *retval = SHN_V850_TCOMMON;
2000 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
2001 *retval = SHN_V850_ZCOMMON;
2008 /* Handle the special V850 section numbers that a symbol may use. */
2011 v850_elf_symbol_processing (abfd, asym)
2015 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
2018 indx = elfsym->internal_elf_sym.st_shndx;
2020 /* If the section index is an "ordinary" index, then it may
2021 refer to a v850 specific section created by the assembler.
2022 Check the section's type and change the index it matches.
2024 FIXME: Should we alter the st_shndx field as well ? */
2026 if (indx < elf_numsections (abfd))
2027 switch (elf_elfsections(abfd)[indx]->sh_type)
2029 case SHT_V850_SCOMMON:
2030 indx = SHN_V850_SCOMMON;
2033 case SHT_V850_TCOMMON:
2034 indx = SHN_V850_TCOMMON;
2037 case SHT_V850_ZCOMMON:
2038 indx = SHN_V850_ZCOMMON;
2047 case SHN_V850_SCOMMON:
2048 if (v850_elf_scom_section.name == NULL)
2050 /* Initialize the small common section. */
2051 v850_elf_scom_section.name = ".scommon";
2052 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
2053 v850_elf_scom_section.output_section = & v850_elf_scom_section;
2054 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
2055 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
2056 v850_elf_scom_symbol.name = ".scommon";
2057 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
2058 v850_elf_scom_symbol.section = & v850_elf_scom_section;
2059 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
2061 asym->section = & v850_elf_scom_section;
2062 asym->value = elfsym->internal_elf_sym.st_size;
2065 case SHN_V850_TCOMMON:
2066 if (v850_elf_tcom_section.name == NULL)
2068 /* Initialize the tcommon section. */
2069 v850_elf_tcom_section.name = ".tcommon";
2070 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2071 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2072 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2073 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2074 v850_elf_tcom_symbol.name = ".tcommon";
2075 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2076 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2077 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2079 asym->section = & v850_elf_tcom_section;
2080 asym->value = elfsym->internal_elf_sym.st_size;
2083 case SHN_V850_ZCOMMON:
2084 if (v850_elf_zcom_section.name == NULL)
2086 /* Initialize the zcommon section. */
2087 v850_elf_zcom_section.name = ".zcommon";
2088 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2089 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2090 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2091 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2092 v850_elf_zcom_symbol.name = ".zcommon";
2093 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2094 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2095 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2097 asym->section = & v850_elf_zcom_section;
2098 asym->value = elfsym->internal_elf_sym.st_size;
2103 /* Hook called by the linker routine which adds symbols from an object
2104 file. We must handle the special v850 section numbers here. */
2107 v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2109 struct bfd_link_info * info ATTRIBUTE_UNUSED;
2110 const Elf_Internal_Sym * sym;
2111 const char ** namep ATTRIBUTE_UNUSED;
2112 flagword * flagsp ATTRIBUTE_UNUSED;
2116 unsigned int indx = sym->st_shndx;
2118 /* If the section index is an "ordinary" index, then it may
2119 refer to a v850 specific section created by the assembler.
2120 Check the section's type and change the index it matches.
2122 FIXME: Should we alter the st_shndx field as well ? */
2124 if (indx < elf_numsections (abfd))
2125 switch (elf_elfsections(abfd)[indx]->sh_type)
2127 case SHT_V850_SCOMMON:
2128 indx = SHN_V850_SCOMMON;
2131 case SHT_V850_TCOMMON:
2132 indx = SHN_V850_TCOMMON;
2135 case SHT_V850_ZCOMMON:
2136 indx = SHN_V850_ZCOMMON;
2145 case SHN_V850_SCOMMON:
2146 *secp = bfd_make_section_old_way (abfd, ".scommon");
2147 (*secp)->flags |= SEC_IS_COMMON;
2148 *valp = sym->st_size;
2151 case SHN_V850_TCOMMON:
2152 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2153 (*secp)->flags |= SEC_IS_COMMON;
2154 *valp = sym->st_size;
2157 case SHN_V850_ZCOMMON:
2158 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2159 (*secp)->flags |= SEC_IS_COMMON;
2160 *valp = sym->st_size;
2168 v850_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
2169 bfd * abfd ATTRIBUTE_UNUSED;
2170 struct bfd_link_info * info ATTRIBUTE_UNUSED;
2171 const char * name ATTRIBUTE_UNUSED;
2172 Elf_Internal_Sym * sym;
2173 asection * input_sec;
2175 /* If we see a common symbol, which implies a relocatable link, then
2176 if a symbol was in a special common section in an input file, mark
2177 it as a special common in the output file. */
2179 if (sym->st_shndx == SHN_COMMON)
2181 if (strcmp (input_sec->name, ".scommon") == 0)
2182 sym->st_shndx = SHN_V850_SCOMMON;
2183 else if (strcmp (input_sec->name, ".tcommon") == 0)
2184 sym->st_shndx = SHN_V850_TCOMMON;
2185 else if (strcmp (input_sec->name, ".zcommon") == 0)
2186 sym->st_shndx = SHN_V850_ZCOMMON;
2193 v850_elf_section_from_shdr (abfd, hdr, name)
2195 Elf_Internal_Shdr * hdr;
2198 /* There ought to be a place to keep ELF backend specific flags, but
2199 at the moment there isn't one. We just keep track of the
2200 sections by their name, instead. */
2202 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
2205 switch (hdr->sh_type)
2207 case SHT_V850_SCOMMON:
2208 case SHT_V850_TCOMMON:
2209 case SHT_V850_ZCOMMON:
2210 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2211 (bfd_get_section_flags (abfd,
2220 /* Set the correct type for a V850 ELF section. We do this
2221 by the section name, which is a hack, but ought to work. */
2224 v850_elf_fake_sections (abfd, hdr, sec)
2225 bfd * abfd ATTRIBUTE_UNUSED;
2226 Elf32_Internal_Shdr * hdr;
2229 register const char * name;
2231 name = bfd_get_section_name (abfd, sec);
2233 if (strcmp (name, ".scommon") == 0)
2235 hdr->sh_type = SHT_V850_SCOMMON;
2237 else if (strcmp (name, ".tcommon") == 0)
2239 hdr->sh_type = SHT_V850_TCOMMON;
2241 else if (strcmp (name, ".zcommon") == 0)
2242 hdr->sh_type = SHT_V850_ZCOMMON;
2247 /* Delete some bytes from a section while relaxing. */
2250 v850_elf_relax_delete_bytes (abfd, sec, addr, toaddr, count)
2257 Elf_Internal_Shdr * symtab_hdr;
2258 Elf32_External_Sym * extsyms;
2259 Elf32_External_Sym * esym;
2260 Elf32_External_Sym * esymend;
2262 unsigned int sec_shndx;
2263 bfd_byte * contents;
2264 Elf_Internal_Rela * irel;
2265 Elf_Internal_Rela * irelend;
2266 struct elf_link_hash_entry * sym_hash;
2267 Elf_Internal_Shdr * shndx_hdr;
2268 Elf_External_Sym_Shndx * shndx;
2270 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2271 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2273 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2275 contents = elf_section_data (sec)->this_hdr.contents;
2277 /* The deletion must stop at the next ALIGN reloc for an alignment
2278 power larger than the number of bytes we are deleting. */
2280 /* Actually delete the bytes. */
2281 #if (DEBUG_RELAX & 2)
2282 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2283 sec->name, addr, toaddr, count );
2285 memmove (contents + addr, contents + addr + count,
2286 toaddr - addr - count);
2287 memset (contents + toaddr-count, 0, count);
2289 /* Adjust all the relocs. */
2290 irel = elf_section_data (sec)->relocs;
2291 irelend = irel + sec->reloc_count;
2292 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2293 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2295 for (; irel < irelend; irel++)
2297 bfd_vma raddr, paddr, symval;
2298 Elf_Internal_Sym isym;
2300 /* Get the new reloc address. */
2301 raddr = irel->r_offset;
2302 if ((raddr >= (addr + count) && raddr < toaddr))
2303 irel->r_offset -= count;
2305 if (raddr >= addr && raddr < addr + count)
2307 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2312 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2315 bfd_elf32_swap_symbol_in (abfd,
2316 extsyms + ELF32_R_SYM (irel->r_info),
2317 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2320 if (isym.st_shndx != sec_shndx)
2323 /* Get the value of the symbol referred to by the reloc. */
2324 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2326 symval = isym.st_value;
2327 #if (DEBUG_RELAX & 2)
2329 char * name = bfd_elf_string_from_elf_section
2330 (abfd, symtab_hdr->sh_link, isym.st_name);
2332 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2333 sec->name, name, isym.st_name,
2334 sec->output_section->vma, sec->output_offset,
2335 isym.st_value, irel->r_addend);
2342 struct elf_link_hash_entry * h;
2344 /* An external symbol. */
2345 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2347 h = elf_sym_hashes (abfd) [indx];
2348 BFD_ASSERT (h != NULL);
2350 symval = h->root.u.def.value;
2351 #if (DEBUG_RELAX & 2)
2353 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2354 sec->name, h->root.root.string, h->root.u.def.value,
2355 sec->output_section->vma, sec->output_offset, irel->r_addend);
2359 paddr = symval + irel->r_addend;
2361 if ( (symval >= addr + count && symval < toaddr)
2362 && (paddr < addr + count || paddr >= toaddr))
2363 irel->r_addend += count;
2364 else if ( (symval < addr + count || symval >= toaddr)
2365 && (paddr >= addr + count && paddr < toaddr))
2366 irel->r_addend -= count;
2369 /* Adjust the local symbols defined in this section. */
2371 esymend = esym + symtab_hdr->sh_info;
2373 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2375 Elf_Internal_Sym isym;
2377 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2379 if (isym.st_shndx == sec_shndx
2380 && isym.st_value >= addr + count
2381 && isym.st_value < toaddr)
2383 isym.st_value -= count;
2385 if (isym.st_value + isym.st_size >= toaddr)
2386 isym.st_size += count;
2388 bfd_elf32_swap_symbol_out (abfd, & isym, shndx, esym);
2390 else if (isym.st_shndx == sec_shndx
2391 && isym.st_value < addr + count)
2393 if (isym.st_value+isym.st_size >= addr + count
2394 && isym.st_value+isym.st_size < toaddr)
2395 isym.st_size -= count;
2397 if (isym.st_value >= addr
2398 && isym.st_value < addr + count)
2399 isym.st_value = addr;
2401 bfd_elf32_swap_symbol_out (abfd, & isym, shndx, esym);
2405 /* Now adjust the global symbols defined in this section. */
2406 esym = extsyms + symtab_hdr->sh_info;
2407 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2409 for (index = 0; esym < esymend; esym ++, index ++)
2411 Elf_Internal_Sym isym;
2413 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2414 sym_hash = elf_sym_hashes (abfd) [index];
2416 if (isym.st_shndx == sec_shndx
2417 && ((sym_hash)->root.type == bfd_link_hash_defined
2418 || (sym_hash)->root.type == bfd_link_hash_defweak)
2419 && (sym_hash)->root.u.def.section == sec
2420 && (sym_hash)->root.u.def.value >= addr + count
2421 && (sym_hash)->root.u.def.value < toaddr)
2423 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2425 isym.st_size += count;
2426 bfd_elf32_swap_symbol_out (abfd, & isym, shndx, esym);
2429 (sym_hash)->root.u.def.value -= count;
2431 else if (isym.st_shndx == sec_shndx
2432 && ((sym_hash)->root.type == bfd_link_hash_defined
2433 || (sym_hash)->root.type == bfd_link_hash_defweak)
2434 && (sym_hash)->root.u.def.section == sec
2435 && (sym_hash)->root.u.def.value < addr + count)
2437 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2438 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2439 isym.st_size -= count;
2441 if ((sym_hash)->root.u.def.value >= addr
2442 && (sym_hash)->root.u.def.value < addr + count)
2443 (sym_hash)->root.u.def.value = addr;
2445 bfd_elf32_swap_symbol_out (abfd, & isym, shndx, esym);
2455 #define NOP_OPCODE (0x0000)
2456 #define MOVHI 0x0640 /* 4byte */
2457 #define MOVHI_MASK 0x07e0
2458 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
2459 #define MOVHI_R2(insn) ((insn) >> 11)
2460 #define MOVEA 0x0620 /* 2byte */
2461 #define MOVEA_MASK 0x07e0
2462 #define MOVEA_R1(insn) ((insn) & 0x1f)
2463 #define MOVEA_R2(insn) ((insn) >> 11)
2464 #define JARL_4 0x00040780 /* 4byte */
2465 #define JARL_4_MASK 0xFFFF07FF
2466 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2467 #define ADD_I 0x0240 /* 2byte */
2468 #define ADD_I_MASK 0x07e0
2469 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2470 #define ADD_R2(insn) ((insn) >> 11)
2471 #define JMP_R 0x0060 /* 2byte */
2472 #define JMP_R_MASK 0xFFE0
2473 #define JMP_R1(insn) ((insn) & 0x1f)
2476 v850_elf_relax_section (abfd, sec, link_info, again)
2479 struct bfd_link_info * link_info;
2482 Elf_Internal_Shdr * symtab_hdr;
2483 Elf_Internal_Rela * internal_relocs;
2484 Elf_Internal_Rela * free_relocs = NULL;
2485 Elf_Internal_Rela * irel;
2486 Elf_Internal_Rela * irelend;
2487 Elf_Internal_Rela * irelalign = NULL;
2488 bfd_byte * contents = NULL;
2489 bfd_byte * free_contents = NULL;
2490 Elf32_External_Sym * extsyms = NULL;
2491 Elf32_External_Sym * free_extsyms = NULL;
2494 int align_pad_size = 0;
2495 Elf_Internal_Shdr * shndx_hdr = NULL;
2496 Elf_External_Sym_Shndx * shndx_buf = NULL;
2500 if (link_info->relocateable
2501 || (sec->flags & SEC_RELOC) == 0
2502 || sec->reloc_count == 0)
2505 /* If this is the first time we have been called
2506 for this section, initialize the cooked size. */
2507 if (sec->_cooked_size == 0)
2508 sec->_cooked_size = sec->_raw_size;
2510 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2512 internal_relocs = (_bfd_elf32_link_read_relocs
2513 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2514 link_info->keep_memory));
2515 if (internal_relocs == NULL)
2517 if (! link_info->keep_memory)
2518 free_relocs = internal_relocs;
2520 irelend = internal_relocs + sec->reloc_count;
2522 while (addr < sec->_cooked_size)
2524 toaddr = sec->_cooked_size;
2526 for (irel = internal_relocs; irel < irelend; irel ++)
2527 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2528 && irel->r_offset > addr
2529 && irel->r_offset < toaddr)
2530 toaddr = irel->r_offset;
2533 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2534 addr, toaddr, align_pad_size);
2539 bfd_vma alignmoveto;
2541 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2542 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2544 if (alignmoveto < alignto)
2548 align_pad_size = alignto - alignmoveto;
2550 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2551 alignmoveto, toaddr, align_pad_size);
2553 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2554 toaddr, align_pad_size))
2557 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2558 (i + 1) < toaddr; i += 2)
2559 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2567 for (irel = internal_relocs; irel < irelend; irel++)
2574 Elf_Internal_Rela * hi_irelfn;
2575 Elf_Internal_Rela * lo_irelfn;
2576 Elf_Internal_Rela * irelcall;
2577 bfd_signed_vma foff;
2579 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2580 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2581 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2585 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2591 /* Get the section contents. */
2592 if (contents == NULL)
2594 if (elf_section_data (sec)->this_hdr.contents != NULL)
2595 contents = elf_section_data (sec)->this_hdr.contents;
2598 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
2599 if (contents == NULL)
2602 free_contents = contents;
2604 if (! bfd_get_section_contents (abfd, sec, contents,
2605 (file_ptr) 0, sec->_raw_size))
2610 /* Read this BFD's symbols if we haven't done so already. */
2611 if (extsyms == NULL)
2613 /* Get cached copy if it exists. */
2614 if (symtab_hdr->contents != NULL)
2615 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2618 /* Go get them off disk. */
2621 amt = symtab_hdr->sh_info;
2622 amt *= sizeof (Elf32_External_Sym);
2623 extsyms = (Elf32_External_Sym *) bfd_malloc (amt);
2624 if (extsyms == NULL)
2626 free_extsyms = extsyms;
2627 if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
2628 || bfd_bread ((PTR) extsyms, amt, abfd) != amt)
2632 if (shndx_hdr->sh_size != 0)
2636 amt = symtab_hdr->sh_info;
2637 amt *= sizeof (Elf_External_Sym_Shndx);
2638 shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
2639 if (shndx_buf == NULL)
2641 if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
2642 || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
2647 laddr = irel->r_offset;
2649 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2651 /* Check code for -mlong-calls output. */
2652 if (laddr + 16 <= (bfd_vma) sec->_raw_size)
2654 insn[0] = bfd_get_16 (abfd, contents + laddr);
2655 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2656 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2657 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2658 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
2660 if ((insn[0] & MOVHI_MASK) != MOVHI
2661 || MOVHI_R1 (insn[0]) != 0)
2665 && ((insn[1] & MOVEA_MASK) != MOVEA
2666 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2670 && (insn[2] & JARL_4_MASK) != JARL_4)
2674 && ((insn[3] & ADD_I_MASK) != ADD_I
2675 || ADD_I5 (insn[3]) != 4
2676 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2680 && ((insn[4] & JMP_R_MASK) != JMP_R
2681 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2686 ((*_bfd_error_handler)
2687 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2688 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2695 ((*_bfd_error_handler)
2696 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2697 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2702 /* Get the reloc for the address from which the register is
2703 being loaded. This reloc will tell us which function is
2704 actually being called. */
2705 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2706 if (hi_irelfn->r_offset == laddr + 2
2707 && ELF32_R_TYPE (hi_irelfn->r_info)
2708 == (int) R_V850_HI16_S)
2711 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2712 if (lo_irelfn->r_offset == laddr + 6
2713 && ELF32_R_TYPE (lo_irelfn->r_info)
2714 == (int) R_V850_LO16)
2717 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2718 if (irelcall->r_offset == laddr + 8
2719 && ELF32_R_TYPE (irelcall->r_info)
2720 == (int) R_V850_22_PCREL)
2723 if ( hi_irelfn == irelend
2724 || lo_irelfn == irelend
2725 || irelcall == irelend)
2727 ((*_bfd_error_handler)
2728 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2729 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2734 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2736 unsigned int r_index;
2737 Elf_Internal_Sym isym;
2739 Elf32_External_Sym * esym;
2740 Elf_External_Sym_Shndx * shndx;
2742 /* A local symbol. */
2743 r_index = ELF32_R_SYM (irelcall->r_info);
2744 esym = extsyms + r_index;
2745 shndx = shndx_buf + (shndx_buf ? r_index : 0);
2746 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2748 if (isym.st_shndx == SHN_UNDEF)
2749 sym_sec = bfd_und_section_ptr;
2750 else if (isym.st_shndx == SHN_ABS)
2751 sym_sec = bfd_abs_section_ptr;
2752 else if (isym.st_shndx == SHN_COMMON)
2753 sym_sec = bfd_com_section_ptr;
2755 sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
2756 symval = isym.st_value;
2761 struct elf_link_hash_entry * h;
2763 /* An external symbol. */
2764 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2765 h = elf_sym_hashes (abfd)[indx];
2766 BFD_ASSERT (h != NULL);
2768 if ( h->root.type != bfd_link_hash_defined
2769 && h->root.type != bfd_link_hash_defweak)
2770 /* This appears to be a reference to an undefined
2771 symbol. Just ignore it--it will be caught by the
2772 regular reloc processing. */
2775 symval = h->root.u.def.value;
2778 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2780 ((*_bfd_error_handler)
2781 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2782 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2787 /* Get the value of the symbol referred to by the reloc. */
2788 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2790 unsigned int r_index;
2791 Elf_Internal_Sym isym;
2793 Elf32_External_Sym * esym;
2794 Elf_External_Sym_Shndx * shndx;
2796 /* A local symbol. */
2797 r_index = ELF32_R_SYM (irel->r_info);
2798 esym = extsyms + r_index;
2799 shndx = shndx_buf + (shndx_buf ? r_index : 0);
2800 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2802 if (isym.st_shndx == SHN_UNDEF)
2803 sym_sec = bfd_und_section_ptr;
2804 else if (isym.st_shndx == SHN_ABS)
2805 sym_sec = bfd_abs_section_ptr;
2806 else if (isym.st_shndx == SHN_COMMON)
2807 sym_sec = bfd_com_section_ptr;
2809 sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
2810 symval = (isym.st_value
2811 + sym_sec->output_section->vma
2812 + sym_sec->output_offset);
2817 struct elf_link_hash_entry * h;
2819 /* An external symbol. */
2820 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2821 h = elf_sym_hashes (abfd)[indx];
2822 BFD_ASSERT (h != NULL);
2824 if ( h->root.type != bfd_link_hash_defined
2825 && h->root.type != bfd_link_hash_defweak)
2826 /* This appears to be a reference to an undefined
2827 symbol. Just ignore it--it will be caught by the
2828 regular reloc processing. */
2831 symval = (h->root.u.def.value
2832 + h->root.u.def.section->output_section->vma
2833 + h->root.u.def.section->output_offset);
2836 addend = irel->r_addend;
2838 foff = (symval + addend
2840 + sec->output_section->vma
2841 + sec->output_offset
2844 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2847 + sec->output_section->vma
2848 + sec->output_offset),
2849 symval, addend, foff);
2852 if (foff < -0x100000 || foff >= 0x100000)
2853 /* After all that work, we can't shorten this function call. */
2856 /* For simplicity of coding, we are going to modify the section
2857 contents, the section relocs, and the BFD symbol table. We
2858 must tell the rest of the code not to free up this
2859 information. It would be possible to instead create a table
2860 of changes which have to be made, as is done in coff-mips.c;
2861 that would be more work, but would require less memory when
2862 the linker is run. */
2863 elf_section_data (sec)->relocs = internal_relocs;
2866 elf_section_data (sec)->this_hdr.contents = contents;
2867 free_contents = NULL;
2869 symtab_hdr->contents = (bfd_byte *) extsyms;
2870 free_extsyms = NULL;
2872 /* Replace the long call with a jarl. */
2873 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2877 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2878 /* If this needs to be changed because of future relaxing,
2879 it will be handled here like other internal IND12W
2882 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2883 contents + irel->r_offset);
2885 /* We can't fully resolve this yet, because the external
2886 symbol value may be changed by future relaxing.
2887 We let the final link phase handle it. */
2888 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2889 contents + irel->r_offset);
2892 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2894 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2896 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2898 if (! v850_elf_relax_delete_bytes (abfd, sec,
2899 irel->r_offset + 4, toaddr, 12))
2902 align_pad_size += 12;
2904 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2906 /* Check code for -mlong-jumps output. */
2907 if (laddr + 10 <= (bfd_vma) sec->_raw_size)
2909 insn[0] = bfd_get_16 (abfd, contents + laddr);
2910 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2911 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2913 if ((insn[0] & MOVHI_MASK) != MOVHI
2914 || MOVHI_R1 (insn[0]) != 0)
2918 && ((insn[1] & MOVEA_MASK) != MOVEA
2919 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2923 && ((insn[2] & JMP_R_MASK) != JMP_R
2924 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2929 ((*_bfd_error_handler)
2930 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2931 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2938 ((*_bfd_error_handler)
2939 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2940 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2945 /* Get the reloc for the address from which the register is
2946 being loaded. This reloc will tell us which function is
2947 actually being called. */
2948 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2949 if (hi_irelfn->r_offset == laddr + 2
2950 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
2953 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2954 if (lo_irelfn->r_offset == laddr + 6
2955 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2958 if ( hi_irelfn == irelend
2959 || lo_irelfn == irelend)
2961 ((*_bfd_error_handler)
2962 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2963 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2968 /* Get the value of the symbol referred to by the reloc. */
2969 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2971 unsigned int r_index;
2972 Elf_Internal_Sym isym;
2974 Elf32_External_Sym * esym;
2975 Elf_External_Sym_Shndx * shndx;
2977 /* A local symbol. */
2978 r_index = ELF32_R_SYM (irel->r_info);
2979 esym = extsyms + r_index;
2980 shndx = shndx_buf + (shndx_buf ? r_index : 0);
2981 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2983 if (isym.st_shndx == SHN_UNDEF)
2984 sym_sec = bfd_und_section_ptr;
2985 else if (isym.st_shndx == SHN_ABS)
2986 sym_sec = bfd_abs_section_ptr;
2987 else if (isym.st_shndx == SHN_COMMON)
2988 sym_sec = bfd_com_section_ptr;
2990 sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
2991 symval = (isym.st_value
2992 + sym_sec->output_section->vma
2993 + sym_sec->output_offset);
2996 char * name = bfd_elf_string_from_elf_section
2997 (abfd, symtab_hdr->sh_link, isym.st_name);
2999 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
3000 sym_sec->name, name, isym.st_name,
3001 sym_sec->output_section->vma, sym_sec->output_offset,
3002 isym.st_value, irel->r_addend);
3009 struct elf_link_hash_entry * h;
3011 /* An external symbol. */
3012 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
3013 h = elf_sym_hashes (abfd)[indx];
3014 BFD_ASSERT (h != NULL);
3016 if ( h->root.type != bfd_link_hash_defined
3017 && h->root.type != bfd_link_hash_defweak)
3018 /* This appears to be a reference to an undefined
3019 symbol. Just ignore it--it will be caught by the
3020 regular reloc processing. */
3023 symval = (h->root.u.def.value
3024 + h->root.u.def.section->output_section->vma
3025 + h->root.u.def.section->output_offset);
3028 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
3029 sec->name, h->root.root.string, h->root.u.def.value,
3030 sec->output_section->vma, sec->output_offset, irel->r_addend);
3034 addend = irel->r_addend;
3036 foff = (symval + addend
3038 + sec->output_section->vma
3039 + sec->output_offset
3042 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
3045 + sec->output_section->vma
3046 + sec->output_offset),
3047 symval, addend, foff);
3049 if (foff < -0x100000 || foff >= 0x100000)
3050 /* After all that work, we can't shorten this function call. */
3053 /* For simplicity of coding, we are going to modify the section
3054 contents, the section relocs, and the BFD symbol table. We
3055 must tell the rest of the code not to free up this
3056 information. It would be possible to instead create a table
3057 of changes which have to be made, as is done in coff-mips.c;
3058 that would be more work, but would require less memory when
3059 the linker is run. */
3060 elf_section_data (sec)->relocs = internal_relocs;
3063 elf_section_data (sec)->this_hdr.contents = contents;
3064 free_contents = NULL;
3066 symtab_hdr->contents = (bfd_byte *) extsyms;
3067 free_extsyms = NULL;
3069 if (foff < -0x100 || foff >= 0x100)
3071 /* Replace the long jump with a jr. */
3074 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
3076 irel->r_addend = addend;
3079 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3080 /* If this needs to be changed because of future relaxing,
3081 it will be handled here like other internal IND12W
3084 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
3085 contents + irel->r_offset);
3087 /* We can't fully resolve this yet, because the external
3088 symbol value may be changed by future relaxing.
3089 We let the final link phase handle it. */
3090 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
3093 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3095 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3096 if (!v850_elf_relax_delete_bytes (abfd, sec,
3097 irel->r_offset + 4, toaddr, 6))
3100 align_pad_size += 6;
3104 /* Replace the long jump with a br. */
3107 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
3109 irel->r_addend = addend;
3112 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3113 /* If this needs to be changed because of future relaxing,
3114 it will be handled here like other internal IND12W
3117 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
3118 contents + irel->r_offset);
3120 /* We can't fully resolve this yet, because the external
3121 symbol value may be changed by future relaxing.
3122 We let the final link phase handle it. */
3123 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
3126 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3128 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3129 if (!v850_elf_relax_delete_bytes (abfd, sec,
3130 irel->r_offset + 2, toaddr, 8))
3133 align_pad_size += 8;
3139 for (irel = internal_relocs; irel < irelend; irel++)
3141 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3142 && irel->r_offset == toaddr)
3144 irel->r_offset -= align_pad_size;
3146 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
3157 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3160 sec->_cooked_size - align_pad_size);
3162 sec->_cooked_size -= align_pad_size;
3168 if (free_relocs != NULL)
3171 if (free_contents != NULL)
3172 free (free_contents);
3174 if (free_extsyms != NULL)
3175 free (free_extsyms);
3180 #define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3181 #define TARGET_LITTLE_NAME "elf32-v850"
3182 #define ELF_ARCH bfd_arch_v850
3183 #define ELF_MACHINE_CODE EM_V850
3184 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3185 #define ELF_MAXPAGESIZE 0x1000
3187 #define elf_info_to_howto v850_elf_info_to_howto_rela
3188 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3190 #define elf_backend_check_relocs v850_elf_check_relocs
3191 #define elf_backend_relocate_section v850_elf_relocate_section
3192 #define elf_backend_object_p v850_elf_object_p
3193 #define elf_backend_final_write_processing v850_elf_final_write_processing
3194 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3195 #define elf_backend_symbol_processing v850_elf_symbol_processing
3196 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3197 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3198 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3199 #define elf_backend_fake_sections v850_elf_fake_sections
3200 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3201 #define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook
3203 #define elf_backend_can_gc_sections 1
3204 #define elf_backend_rela_normal 1
3206 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3207 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3208 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3209 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3210 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3211 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3213 #define elf_symbol_leading_char '_'
3215 #include "elf32-target.h"